Modeling Automatic Room Temperature and Humidity Monitoring System with Fan Control on the Internet of Things

Abstract

The Internet of Things (IoT) aims to expand the benefits of being connected to the Internet network continuously. It functions as a control system that has been widely applied in various fields because in certain case people are not allowed in certain rooms for security reasons. The research aimed to create a temperature and humidity monitoring system using as many fan controls as expected by utilizing IoT. The model used input in the form of temperature and humidity sensors. The output was a motor driver that drove a fan and used a microcontroller as the main processor. IoT-based systems consisted of hardware and software. Hardware included NodeMCU ESP8266 V3, DHT22 sensor, L298N motor driver module, fan, and computer. Meanwhile, the microcontroller software was made using Arduino IDE. From the test results, the system model works well. Fan control is set manually based on desired room temperature and humidity monitoring based on IoT. A mobile phone can also monitor temperature and humidity and control fans. The DHT22 sensor can read temperature and humidity every two seconds so that the resulting data is stable to display. Then, the L298N motor driver can adjust the fan speed with Pulse Width Modulation (PWM) using analog data ranging from 1 to 1.024.

Implementation of Internet of Things for Egg Incubation Control System

“…The user can receive every message or notification of temperature and humidity conditions and information on eggs hatched in the incubator. In the block diagram above, it can be explained that the process in the microcontroller-based egg incubation device consists of several parts, namely input, process and output [10]. Together, all these parts work together to form a ready-to-use tool :…”